Transactions in MySQL July 28, 2011: 09:37PM Why I build large websites. We don't use transactions too often. One subsystem I work on, MogileFS, uses transactions in one spot. This trivial use causes an occasional deadlock to happen. A while back I wrote in two quick workarounds, and today I revisited those changes, and found some interesting transactional behaviors in the process. What. MogileFS